- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377879 > MB3789PFV (FUJITSU LTD) RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS PDF資料下載
參數(shù)資料
| 型號(hào)： | MB3789PFV |
| 廠商： | FUJITSU LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 0.07 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 22/28頁 |
| 文件大?。?/td> | 214K |
| 代理商： | MB3789PFV |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當(dāng)前第22頁第23頁第24頁第25頁第26頁第27頁第28頁
22
MB3789
I
EQUIVALENT SERIES RESISTANCE OF SMOOTHING CAPACITOR AND SYSTEM
STABILITY
The equivalent series resistance (ESR) value of a smoothing capacitor for the DC/DC converter largely affects
the loop phase characteristic.
Depending on the ESR value, the phase characteristic causes the ideal capacitor in a high-frequency domain
advance the loop phase (as shown in Figures 16 and 17) and thus the system is improved in stability. In contrast,
using a smoothing capacitor with low ESR lowers system stability. Use meticulous care when a semiconductor
electrolytic capacitor with low ESR (such as an OS capacitor) or a tantalum capacitor is used. (The next page
gives an example of reduction in phase margin when an OS capacitor is used.)
R
C
V
IN
D
RL
C
Tr
L
20
0
20
40
60
10
(1) : R
C
= 0
(2) : R
C
= 31 m
100
1 k
10 k
100 k
G
Frequency f (Hz)
(1)
(2)
0
90
180
10
100
1 k
10 k
100 k
(1) : R
C
= 0
(2) : R
C
= 31 m
P
Frequency f (Hz)
(1)
(2)
Figure 15 Basic circuit of step-down DC/DC converter
Figure 16 Gain vs. frequency
Figure 17 Phase vs. frequency
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB3790PF | Battery Backup IC |
| MB3790 | DIODE SCHOTTKY SINGLE 25V 200mW 0.32V-vf 200mA-IFM 1mA-IF 2uA-IR SOT-23 3K/REEL |
| MB3790PFT | Battery Backup IC |
| MB3793-27A | Power Voltage Monitoring IC with Watchdog Timer |
| MB3793-27APNF | Circular Connector; No. of Contacts:128; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB3789PFV-G-BND(E1) | 制造商:Fujitsu 功能描述: |
| MB-379 | 制造商:Maxxtro 功能描述: |
| MB3790 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:Battery Backup IC |
| MB3790PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:Battery Backup IC |
| MB3790PF-G-BND-JNE1 | 制造商:FUJITSU 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。